9 letter words:
passbooks17,
8 letter words:
passbook16,
6 letter words:
spooks12,
bassos8,
5 letter words:
basks11,
books11,
bosks11,
kobos11,
spook11,
askos9,
soaks9,
sooks9,
basso7,
psoas7,
soaps7,
sobas7,
4 letter words:
bask10,
book10,
bosk10,
kabs10,
kobo10,
kobs10,
kops10,
asks8,
baps8,
bops8,
koas8,
koss8,
oaks8,
okas8,
skas8,
soak8,
sook8,
abos6,
apos6,
asps6,
bass6,
boas6,
boos6,
boss6,
obas6,
oops6,
pass6,
poos6,
sabs6,
saps6,
soap6,
soba6,
sobs6,
sops6,
spas6,
ossa4,
sass4,
3 letter words:
kab9,
kob9,
kop9,
ask7,
bap7,
bop7,
kas7,
koa7,
kos7,
oak7,
oka7,
ska7,
abo5,
abs5,
apo5,
asp5,
bas5,
boa5,
boo5,
bos5,
oba5,
ops5,
pas5,
poo5,
sab5,
sap5,
sob5,
sop5,
spa5,
ass3,
sos3,
2 letter words:
ka6,
ab4,
ba4,
bo4,
op4,
pa4,
as2,
os2,
so2,